A Top Frame for Foldable Tent

ABSTRACT

The present invention provides a top frame of foldable tent including a set of foldable roof braces and a set of coordinated sub-braces constructing the main frame is typically employed with a hydraulic tappet fixed between the static pivot hub pivoting all the sub-braces and spreader pivoting all the roof braces with both ends, by means of the jack-up and hold-on features of the hydraulic tappet, said spreader is pushed down and kept in the ultimate position to bring the entire roof braces q and sub-braces to expend out. Said structure has fewer parts, simple, convenient for manufacturing and combination features.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an attachment for camping andtrailering, and more particularly to a lockable top frame for foldabletent.

2. Description of Prior Art

In accordance with the conventional technology, a top frame for foldabletent, as shown in FIG. 1 and FIG. 2, including a set of foldable roofbraces 1′ and a set of coordinated sub-braces 5′ constructing the mainframe, is typically comprised of a strut 2′, a spring 3′, a spreader 4′and an end block 6′, wherein a pivot hub 21′ fixed on the top end ofsaid strut 2′ is pivoted radically and respectively each sub-brace 5′,the another end of said each sub-brace 5′ is pivoted on the foldableroof brace 1; said strut 2′ is put on sequentially with spring 3′ andthe spreader 4′ pivoting with all the foldable roof braces 1′ from thebottom end, finally fixed with the end block 6′ via a bowel pin 62′ atthe bottom end; approaching the bottom end of said strut 2′, an elasticclamp 7′ is located, coordinating to it, said spreader 4′ is possessedof a catching notch 41 opened at the low portion for the elastic clamp7′ locking into so as to locate the spreader 4′ on the strut 2′.

When tending to close the tent applying above-mentioned structure, justneed to press down the elastic clamp 7′ located on the catching notch41′ of the spreader 4′ slightly to release the lock function between theelastic clamp 7′ and the catching notch 41′, so that the spreader 4′slides up along with the trunk of the strut 2′ under the restoring forceof the spring 3′, the pivoted roof braces 1′ loosing support are closedto the center strut 2′ to finish the close operation.

In the close state, the spreader 4′ is pushed upward closing to thestatic pivot hub 21′ under the elastic force of the spring 3′ so as tolocate on the high position without any extra force.

As tending to expending the tent, just overcoming the elastic force ofspring 3′, push down the spreader 4′ until the elastic clamp 7′ lockinginto the catching notch 41′, by means of the sub-braces 5′ pivoted onthe static pivot hub 21′, the foldable roof braces 1′ is drew upexpending. But, the force exerted on the spreader 4′ by the userovercoming the long distance elastic force of the spring 3′ should beenough big, so as to bring inconvenient to the user, especially to theshorter, in order to reach the spreader 4′, they have to stand ontiptoe, even so the spreader 4′ is still not got so that the tent is notable to be opened, hence the open operation the tent is not convenient.

Additionally, said top frame structure has some shortcomings, like asmore parts, complicated structure, difficult manufacture andcombination.

OBJECTS AND SUMMARY OF THE INVENTION

It is therefore a main object of the present invention to provide a topframe for foldable tent having fewer parts, simple structure,facilitating to manufacturing and combination, easy open operationsaving labor features.

For achieving the above-mentioned object, the present invention providesa top frame for foldable tent, which including a set of foldable roofbraces and a set of coordinated sub-braces constructing the main frameis typically employed with a hydraulic tappet fixed between the staticpivot hub pivoting all the sub-braces and spreader pivoting all the roofbraces with both ends, by means of the jack-up and hold-on features ofthe hydraulic tappet, said spreader is pushed down and kept in theultimate position to bring the entire roof braces q and sub-braces toexpend out.

Said spreader has a quad low portion with crossing grooves facilitatingto exerting pushing force.

As utilizing above-mentioned project, due to substituting a hydraulictappet for the conventional strut, spring and end block and locatingdevice set upon between the static pivot hub and the spreader, thestructure has fewer parts, simple, convenient for manufacturing andcombination features.

As in open state, under jack-up and hold-on of said hydraulic tappet,said spreader is pushed down on ultimate low position so that the entireroof braces and sub-braces are kept in open state such as in expendingout state; as tending to close the tent, just push up the spreader alongthe hydraulic tappet to bring the entire roof braces and sub-braces toclose to the center downward, by means of tying up of a rope, the tentis closed down; as tending to open the tent, remove away the tying rope,under the pushing function of the hydraulic tappet, the spreader ispushed down to bring the entire roof braces and sub-braces to expend outuntil get the ultimate point and hold on, so all the open operation isvery convenient without any extra force exerting.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of the prior art.

FIG. 2 is a perspective view showing the combination state of the priorart.

FIG. 3 is an exploded view of the present invention.

FIG. 4 is a perspective view showing the combination state of thepresent invention.

FIG. 5 is a perspective view showing the closed state of the presentinvention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

A top frame of foldable tent provided by the present invention is assame as the conventional to suit to foldable tent including a set offoldable roof braces 1 and a set of coordinated sub-braces 5constructing the main frame.

Referring to FIG. 3, the present invention is typically comprised of ahydraulic tappet 2 and spreader 3. Wherein said hydraulic tappet 2 is aconventional goods, so the detail is not described here, it typicallyincludes a sleeve 21 and an inner rod 22. One end of the hydraulictappet 2 (the end of sleeve 21 in drawing) is fixed on the static pivothub 4 pivoting with the entire sub-braces 5, the another end of thehydraulic tappet 2 (the rod 22 end in drawing) is fixed on the spreader3, by means of the jack-up and hold-on features of the hydraulic tappet,said spreader 3 is pushed down and kept in the ultimate position tobring the entire roof braces q and sub-braces 5 to expend out.

As tending to close the tent, just push up the spreader to bring thepivot center of the entire roof braces 1 to move up, such as bringingthe entire sub-braces 5 and roof braces 1 to concentrate to the center,then cooperate to a rope (not shown in drawings), the tent is tied up,as shown in FIG. 5.

As tending to open the tent, remove away the tying rope, under thepushing function of the hydraulic tappet 2, the spreader 3 is pusheddown to bring the entire roof braces 1 and sub-braces 5 to expend outuntil get the ultimate point and hold on, as shown in FIG. 4, so all theopen operation is very convenient without any extra force exerting.

Said awning 3 is fixed on pivoting hub 23 of said awning boom frame 2with the center, and each corner is fixed on the free end of eachcornice boom 4.

In a word, as utilizing above-mentioned project, due to substituting ahydraulic tappet 2 for the conventional strut, spring and end block andlocating device set upon between the static pivot hub and the spreader,the structure has fewer parts, simple, convenient for manufacturing andcombination features.

1. A top frame for foldable tent including a set of foldable roof bracesand a set of coordinated sub-braces constructing the main frame istypically employed with a hydraulic tappet fixed between the staticpivot hub pivoting all the sub-braces and spreader pivoting all the roofbraces with both ends, by means of the jack-up and hold-on features ofthe hydraulic tappet, said spreader is pushed down and kept in theultimate position to bring the entire roof braces q and sub-braces toexpend out.
 2. A top frame for foldable tent as claimed in claim 1,wherein said spreader has a quad low portion with crossing grooves.